The Silmarillion

But when the Battle was ended and from the ruin of the North great clouds arose and hid the stars, the Valar drew Melkor back to Valinor, bound hand and foot, and blindfold; and he was brought to the Ring of Doom. There he lay upon his face before the feet of Manwë and sued for pardon; but his prayer was denied, and he was cast into prison in the fastness of Mandos, whence none can escape, neither Vala, nor Elf, nor mortal Man. Vast and strong are those halls, and they were built in the west of the land of Aman. There was Melkor doomed to abide for three ages long, before his cause should be tried anew, or he should plead again for pardon.

Then again the Valar were gathered in council, and they were divided in debate. For some, and of those Ulmo was the chief, held that the Quendi should be left free to walk as they would in Middle-earth, and with their gifts of skill to order all the lands and heal their hurts. But the most part feared for the Quendi in the dangerous world amid the deceits of the starlit dusk; and they were filled moreover with the love of the beauty of the Elves and desired their fellowship. At the last, therefore, the Valar summoned the Quendi to Valinor, there to be gathered at the knees of the Powers in the light of the Trees for ever; and Mandos broke his silence, saying: 'So it is doomed.' From this summons came many woes that afterwards befell.

But the Elves were at first unwilling to hearken to the summons, for they had as yet seen the Valar only in their wrath as they went to war, save Oromë alone; and they were filled with dread. Therefore Oromë was sent again to them, and he chose from among them ambassadors who should go to Valinor and speak for their people; and these were Ingwë, Finwë and Elwë, who afterwards were kings. And coming they were filled with awe by the glory and majesty of the Valar, and desired greatly the light and splendour of the Trees. Then Oromë brought them back to Cuiviénen, and they spoke before their people, and counselled them to heed the summons of the Valar and remove into the West

Then befell the first sundering of the Elves. For the kindred of Ingwë, and the most part of the kindreds of Finwë and Elwë, were swayed by the words of their lords, and were willing to depart and follow Oromë; and these were known ever after as the Eldar, by the name that Oromë gave to the Elves in the beginning, in their own tongue. But many refused the summons, preferring the starlight and the wide spaces of Middle-earth to the rumour of the Trees; and these are the Avari, the Unwilling, and they were sundered in that time from the Eldar, and met never again until many ages were past.

The Eldar prepared now a great march from their first homes in the east; and they were arrayed in three hosts. The smallest host and the first to set forth was led by Ingwë, the most high lord of all the Elvish race. He entered into Valinor and sits at the feet of the Powers, and all Elves revere his name; but he came never back, nor looked again upon Middle-earth. The Vanyar were his people; they are the Fair Elves, the beloved of Manwë and Varda, and few among Men have spoken with them.

Next came the Noldor, a name of wisdom, the people of Finwë. They are the Deep Elves, the friends of Aulë; and they are renowned in song, for they fought and laboured long and grievously in the northern lands of old.

The greatest host came last, and they are named the Teleri, for they tarried on the road, and were not wholly of a mind to pass from the dusk to the light of Valinor. In water they had great delight, and those that came at last to the western shores were enamoured of the sea. The Sea-elves therefore they became in the land of Aman, the Falmari, for they made music beside the breaking waves. Two lords they had, for their numbers were great: Elwë Singollo (which signifies Greymantle) and Olwë his brother.

These were the three kindreds of the Eldalië, who passing at length into the uttermost West in the days of the Trees are called the Calaquendi, Elves of the Light. But others of the Eldar there were who set out indeed upon the westward march, but became lost upon the long road, or turned aside, or lingered on the shores of Middle-earth; and these were for the most part of the kindred of the Teleri, as is told hereafter. They dwelt by the sea or wandered in the woods and mountains of the world, yet their hearts were turned towards the West. Those Elves the Calaquendi call the Úmanyar, since they came never to the land of Aman and the Blessed Realm; but the Úmanyar and the Avari alike they call the Moriquendi, Elves of the Darkness, for they never beheld the Light that was before the Sun and Moon.